Chatting to a colleague on Facebook, he mentioned that another had written her car off yesterday. In an accident not dissimilar to the only one I've had, following which my Mum's much-loved Renault 5 was no more.

To lend it some reality, I reconstructed it with rapid deployment of everyday freebie tools: Google Streetview, a sprinkling of Picasa, a dash of Skitch... et voila! It's almost like I am there again, on a drizzly, late afternoon in 1985, turning right at the Dukes Head, Wallington. If memory serves me correctly - uncannily - I was wearing my Batman underpants that day.

A senior colleague of mine announced that he'd discovered YouTube the other day. Which made me smile - partly in that smug and supercilious geek 'Oh, FFS!' sort of way, but a bit for sharing the delight that someone must experience, chancing on the world's greatest resource for everything, for the first time, in 2013. I remember hearing John Chambers talking at a Cisco event a few years ago, speculating - promising - that 99% of the world's internet traffic would be video within a few years. At the time, I was a bit sceptical. Now, I get it.

What makes me want to write about it now? One of those almost everyday occurrences, where a Facebook friend draws my attention to something massively valuable, delivered in video, via YouTube. I am so envious of my daughters' access to this tremendous source of education... Hands up who knew all of this already? You fibbers...

And massive kudos to CGP Grey, a YouTube superstar, advancing the cause of edjumicating the world because... he enjoys doing so. He has much more.